The most advantageous hydrodynamic upgrade a swimmer can make is in their race cap of choice. The arena 3D racing cap family is molded to provide a no-wrinkle fit optimizing the hydrodynamics of your head. The arena 3D Soft cap is revolutionizing the racing cap mold by delivering a more comfortable fitting cap. Easier to put on, increased flexibility and superior comfortable, as hydrodynamic as our 3D Ultra Race cap. The most advantageous hydrodynamic upgrade a swimmer can make is in their race cap of choice. The arena 3D racing cap family is molded to provide a no-wrinkle fit optimizing the hydrodynamics of your head. The arena 3D Soft cap is revolutionizing the racing cap mold by delivering a more comfortable fitting cap. Easier to put on, increased flexibility and superior comfortable, as hydrodynamic as our 3D Ultra Race cap.